3 * Copyright (c) 1991-1997, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "'So that was the job I felt I had to do when I started,' thought Sam."
17 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
22 do_trans(SV *sv, OP *arg)
30 register I32 matches = 0;
31 register I32 squash = op->op_private & OPpTRANS_SQUASH;
36 tbl = (short*)cPVOP->op_pv;
37 s = (U8*)SvPV(sv, len);
41 s = (U8*)SvPV_force(sv, len);
45 croak("panic: do_trans");
46 DEBUG_t( deb("2.TBL\n"));
47 if (!op->op_private) {
49 if ((ch = tbl[*s]) >= 0) {
59 if ((ch = tbl[*s]) >= 0) {
61 if (matches++ && squash) {
70 else if (ch == -1) /* -1 is unmapped character */
71 *d++ = *s; /* -2 is delete character */
74 matches += send - d; /* account for disappeared chars */
76 SvCUR_set(sv, d - (U8*)SvPVX(sv));
83 do_join(register SV *sv, SV *del, register SV **mark, register SV **sp)
86 register I32 items = sp - mark;
89 register char *delim = SvPV(del, delimlen);
93 len = (items > 0 ? (delimlen * (items - 1) ) : 0);
94 if (SvTYPE(sv) < SVt_PV)
95 sv_upgrade(sv, SVt_PV);
96 if (SvLEN(sv) < len + items) { /* current length is way too short */
104 SvGROW(sv, len + 1); /* so try to pre-extend */
115 s = SvPV(*mark, tmplen);
116 sv_setpvn(sv, s, tmplen);
126 for (; items > 0; items--,mark++) {
127 sv_catpvn(sv,delim,len);
132 for (; items > 0; items--,mark++)
139 do_sprintf(SV *sv, I32 len, SV **sarg)
142 char *pat = SvPV(*sarg, patlen);
143 bool do_taint = FALSE;
145 sv_vsetpvfn(sv, pat, patlen, Null(va_list*), sarg + 1, len - 1, &do_taint);
154 SV *targ = LvTARG(sv);
157 register unsigned char *s;
158 register unsigned long lval;
165 s = (unsigned char*)SvPV_force(targ, targlen);
166 lval = U_L(SvNV(sv));
167 offset = LvTARGOFF(sv);
168 size = LvTARGLEN(sv);
170 len = (offset + size + 7) / 8;
172 s = (unsigned char*)SvGROW(targ, len + 1);
173 (void)memzero(s + targlen, len - targlen + 1);
174 SvCUR_set(targ, len);
178 mask = (1 << size) - 1;
182 s[offset] &= ~(mask << size);
183 s[offset] |= lval << size;
188 s[offset] = lval & 255;
189 else if (size == 16) {
190 s[offset] = (lval >> 8) & 255;
191 s[offset+1] = lval & 255;
193 else if (size == 32) {
194 s[offset] = (lval >> 24) & 255;
195 s[offset+1] = (lval >> 16) & 255;
196 s[offset+2] = (lval >> 8) & 255;
197 s[offset+3] = lval & 255;
203 do_chop(register SV *astr, register SV *sv)
208 if (SvTYPE(sv) == SVt_PVAV) {
213 for (i = 0; i <= max; i++) {
214 sv = (SV*)av_fetch(av, i, FALSE);
215 if (sv && ((sv = *(SV**)sv), sv != &sv_undef))
220 if (SvTYPE(sv) == SVt_PVHV) {
223 (void)hv_iterinit(hv);
225 while (entry = hv_iternext(hv))
226 do_chop(astr,hv_iterval(hv,entry));
230 if (len && !SvPOK(sv))
231 s = SvPV_force(sv, len);
234 sv_setpvn(astr, s, 1);
240 sv_setpvn(astr, "", 0);
245 do_chomp(register SV *sv)
255 if (SvTYPE(sv) == SVt_PVAV) {
260 for (i = 0; i <= max; i++) {
261 sv = (SV*)av_fetch(av, i, FALSE);
262 if (sv && ((sv = *(SV**)sv), sv != &sv_undef))
263 count += do_chomp(sv);
267 if (SvTYPE(sv) == SVt_PVHV) {
270 (void)hv_iterinit(hv);
272 while (entry = hv_iternext(hv))
273 count += do_chomp(hv_iterval(hv,entry));
277 if (len && !SvPOKp(sv))
278 s = SvPV_force(sv, len);
285 while (len && s[-1] == '\n') {
293 char *rsptr = SvPV(rs, rslen);
304 if (memNE(s, rsptr, rslen))
319 do_vop(I32 optype, SV *sv, SV *left, SV *right)
321 dTHR; /* just for taint */
337 if (sv != left || (optype != OP_BIT_AND && !SvOK(sv) && !SvGMAGICAL(sv)))
338 sv_setpvn(sv, "", 0); /* avoid undef warning on |= and ^= */
339 lsave = lc = SvPV(left, leftlen);
340 rsave = rc = SvPV(right, rightlen);
341 len = leftlen < rightlen ? leftlen : rightlen;
343 if (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) {
344 dc = SvPV_force(sv, na);
345 if (SvCUR(sv) < len) {
346 dc = SvGROW(sv, len + 1);
347 (void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1);
351 I32 needlen = ((optype == OP_BIT_AND)
352 ? len : (leftlen > rightlen ? leftlen : rightlen));
353 Newz(801, dc, needlen + 1, char);
354 (void)sv_usepvn(sv, dc, needlen);
355 dc = SvPVX(sv); /* sv_usepvn() calls Renew() */
358 (void)SvPOK_only(sv);
360 if (len >= sizeof(long)*4 &&
361 !((long)dc % sizeof(long)) &&
362 !((long)lc % sizeof(long)) &&
363 !((long)rc % sizeof(long))) /* It's almost always aligned... */
365 I32 remainder = len % (sizeof(long)*4);
366 len /= (sizeof(long)*4);
375 *dl++ = *ll++ & *rl++;
376 *dl++ = *ll++ & *rl++;
377 *dl++ = *ll++ & *rl++;
378 *dl++ = *ll++ & *rl++;
383 *dl++ = *ll++ ^ *rl++;
384 *dl++ = *ll++ ^ *rl++;
385 *dl++ = *ll++ ^ *rl++;
386 *dl++ = *ll++ ^ *rl++;
391 *dl++ = *ll++ | *rl++;
392 *dl++ = *ll++ | *rl++;
393 *dl++ = *ll++ | *rl++;
394 *dl++ = *ll++ | *rl++;
409 *dc++ = *lc++ & *rc++;
413 *dc++ = *lc++ ^ *rc++;
417 *dc++ = *lc++ | *rc++;
421 sv_catpvn(sv, rsave + len, rightlen - len);
422 else if (leftlen > len)
423 sv_catpvn(sv, lsave + len, leftlen - len);
440 I32 dokeys = (op->op_type == OP_KEYS);
441 I32 dovalues = (op->op_type == OP_VALUES);
442 I32 realhv = (SvTYPE(hv) == SVt_PVHV);
444 if (op->op_type == OP_RV2HV || op->op_type == OP_PADHV)
445 dokeys = dovalues = TRUE;
448 if (op->op_flags & OPf_MOD) { /* lvalue */
449 dTARGET; /* make sure to clear its target here */
450 if (SvTYPE(TARG) == SVt_PVLV)
451 LvTARG(TARG) = Nullsv;
458 (void)hv_iterinit(hv); /* always reset iterator regardless */
460 (void)avhv_iterinit((AV*)hv);
465 if (gimme == G_SCALAR) {
469 if (op->op_flags & OPf_MOD) { /* lvalue */
470 if (SvTYPE(TARG) < SVt_PVLV) {
471 sv_upgrade(TARG, SVt_PVLV);
472 sv_magic(TARG, Nullsv, 'k', Nullch, 0);
475 LvTARG(TARG) = (SV*)hv;
480 if (!SvRMAGICAL(hv) || !mg_find((SV*)hv,'P'))
485 while (entry = realhv ? hv_iternext(hv) : avhv_iternext((AV*)hv)) {
493 /* Guess how much room we need. hv_max may be a few too many. Oh well. */
494 EXTEND(sp, HvMAX(hv) * (dokeys + dovalues));
496 PUTBACK; /* hv_iternext and hv_iterval might clobber stack_sp */
497 while (entry = realhv ? hv_iternext(hv) : avhv_iternext((AV*)hv)) {
500 XPUSHs(hv_iterkeysv(entry)); /* won't clobber stack_sp */
502 tmpstr = sv_newmortal();
504 sv_setsv(tmpstr,realhv ?
505 hv_iterval(hv,entry) : avhv_iterval((AV*)hv,entry));
506 DEBUG_H(sv_setpvf(tmpstr, "%lu%%%d=%lu",
507 (unsigned long)HeHASH(entry),
509 (unsigned long)(HeHASH(entry) & HvMAX(hv))));